Title:
MANUFACTURE OF BAR-SHAPED CERAMIC BODY
Document Type and Number:
Japanese Patent JP3217642
Kind Code:
B2
Abstract:
PURPOSE: To mold and manufacture in a good manner a very fine ceramic bar-shaped body of non-uniform wall thickness provided with hollow sections inside by preparing ceramic raw material powder, forming granular particles having the average particle diameter and apparent bulk density of specified range, injection molding a molding material composed of the granular particles blended with a binder, and degreasing and burning the material.
CONSTITUTION: When a very fine bar-shaped ceramic body 2 with a hollow section 1 used suitably for a medical laser surgical knife, a laser probe and the like, ceramic raw material powder is prepared to form granular particles of average particle diameter of 50-90μm and apparent bulk density of 0.60-0.80g/cm2, and a molding material composed of granular particles blended with a binder is injection molded by the molding pressure of 500kg/cm2 or lower, and then degreased and burnt. The granular particles are formed into the round shape, by which the internal friction of the ceramic material is reduced, and the molding material is filled stably into a thin wall section even when the shape of the body is very fine and its wall thickness is of non-uniform shape.
Inventors:
Toshio Ohashi
Miyazawa Sugio
Miyazawa Sugio
Application Number:
JP13962695A
Publication Date:
October 09, 2001
Filing Date:
June 06, 1995
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
A61B18/20; B28B1/24; B28B3/20; C04B35/622; C04B35/634; (IPC1-7): B28B1/24; A61B18/20
Domestic Patent References:
| JP5147011A | ||||
| JP5820775A | ||||
| JP741368A | ||||
| JP8197526A | ||||
| JP5169427A | ||||
| JP747518A | ||||
| JP61205103A | ||||
| JP2171207A | ||||
| JP4231038A |
Attorney, Agent or Firm:
Ippei Watanabe